From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiri Pirko Subject: [patch net-next 02/19] net: bridge: Add support for offloading port attributes Date: Mon, 5 Jun 2017 11:20:26 +0200 Message-ID: <20170605092043.3523-3-jiri@resnulli.us> References: <20170605092043.3523-1-jiri@resnulli.us> Cc: davem@davemloft.net, idosch@mellanox.com, arkadis@mellanox.com, mlxsw@mellanox.com, roopa@cumulusnetworks.com, stephen@networkplumber.org, ivecera@redhat.com To: netdev@vger.kernel.org Return-path: Received: from mail-wm0-f66.google.com ([74.125.82.66]:36173 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751512AbdFEJUt (ORCPT ); Mon, 5 Jun 2017 05:20:49 -0400 Received: by mail-wm0-f66.google.com with SMTP id k15so28807261wmh.3 for ; Mon, 05 Jun 2017 02:20:48 -0700 (PDT) In-Reply-To: <20170605092043.3523-1-jiri@resnulli.us> Sender: netdev-owner@vger.kernel.org List-ID: From: Arkadi Sharshevsky Currently the flood, learning and learning_sync port attributes are offloaded by setting the SELF flag. Add support for offloading the flood and learning attribute through the bridge code. In case of setting an unsupported flag on a offloded port the operation will fail. The learning_sync attribute doesn't have any software representation and cannot be offloaded through the bridge code. Signed-off-by: Arkadi Sharshevsky Reviewed-by: Ido Schimmel Signed-off-by: Jiri Pirko --- net/bridge/br_netlink.c | 112 +++++++++++++++++++++++++++++++++++++++--------- net/bridge/br_private.h | 4 ++ 2 files changed, 96 insertions(+), 20 deletions(-) diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 1e63ec4..1afafb7 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -17,6 +17,7 @@ #include #include #include +#include #include "br_private.h" #include "br_private_stp.h" @@ -662,16 +663,52 @@ static int br_set_port_state(struct net_bridge_port *p, u8 state) } /* Set/clear or port flags based on attribute */ -static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], - int attrtype, unsigned long mask) +static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], + int attrtype, unsigned long mask) { - if (tb[attrtype]) { - u8 flag = nla_get_u8(tb[attrtype]); - if (flag) - p->flags |= mask; - else - p->flags &= ~mask; + struct switchdev_attr attr = { + .orig_dev = p->dev, + .id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT, + }; + unsigned long flags; + int err; + + if (!tb[attrtype]) + return 0; + + if (nla_get_u8(tb[attrtype])) + flags = p->flags | mask; + else + flags = p->flags & ~mask; + + if (mask & ~BR_PORT_FLAGS_HW_OFFLOAD) + goto out; + + err = switchdev_port_attr_get(p->dev, &attr); + if (err == -EOPNOTSUPP) + goto out; + if (err) + return err; + + /* Check if specific bridge flag attribute offload is supported */ + if (!(attr.u.brport_flags_support & mask)) { + br_warn(p->br, "bridge flag offload is not supported %u(%s)\n", + (unsigned int)p->port_no, p->dev->name); + return -EOPNOTSUPP; + } + + attr.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS; + attr.flags = SWITCHDEV_F_DEFER; + attr.u.brport_flags = flags; + err = switchdev_port_attr_set(p->dev, &attr); + if (err) { + br_warn(p->br, "error setting offload FLAG on port %u(%s)\n", + (unsigned int)p->port_no, p->dev->name); + return err; } +out: + p->flags = flags; + return 0; } /* Process bridge protocol info on port */ @@ -681,20 +718,55 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) bool br_vlan_tunnel_old = false; int err; - br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); - br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); - br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); - br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); - br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); - br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); - br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); - br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); - br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); - br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); - br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); + err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); + if (err) + return err; + + err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); + if (err) + return err; + + err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); + if (err) + return err; + + err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); + if (err) + return err; + + err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); + if (err) + return err; + + err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); + if (err) + return err; + + err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); + if (err) + return err; + + err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); + if (err) + return err; + + err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); + if (err) + return err; + + err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); + if (err) + return err; + + err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); + if (err) + return err; br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false; - br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); + err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); + if (err) + return err; + if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) nbp_vlan_tunnel_info_flush(p); diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 2062692..5dc30ed 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -42,6 +42,10 @@ /* Path to usermode spanning tree program */ #define BR_STP_PROG "/sbin/bridge-stp" +/* Flags that can be offloaded to hardware */ +#define BR_PORT_FLAGS_HW_OFFLOAD (BR_LEARNING | BR_FLOOD | \ + BR_MCAST_FLOOD | BR_BCAST_FLOOD) + typedef struct bridge_id bridge_id; typedef struct mac_addr mac_addr; typedef __u16 port_id; -- 2.9.3